Air diffuser



FIG. 1 is an isometric view of an air diffuser;

FIG. 2 is a first side elevational view of the air diffuser of FIG. 1;

FIG. 3 is a second side elevational view of the air diffuser of FIG. 1;

FIG. 4 is a top plan view of the air diffuser of FIG. 1;

FIG. 5 is a bottom plan view of the air diffuser of FIG. 1;

FIG. 6 is an isometric view of the air diffuser of FIG. 1 with the louvers moved to an alternative airflow position;

FIG. 7 is a first side elevational view of the air diffuser of FIG. 6; and,

FIG. 8 is a second side elevational view of the air diffuser of FIG. 6. 

The ornamental design for an air diffuser, as shown and described. 